[Insight-users] ITK crash on Lion/Qt

[Christian Lackas]

* Sean McBride <sean at rogue-research.com> [111014 23:46]:

Hi Sean, Everybody,

> If you're dying in free() it's probably because of a memory error.
> You could try enabling MallocScribble and friends (see 'man malloc')
> and/or guard malloc (see 'man libgmalloc').

thanks for your suggestions. They gave me a few more ideas on how to
look at the problem.

> Does it work if you build in 10.6 and run that executable in 10.7?  If
> so, it could be related to SDK and deployment target choice.

It does not matter where it is build. 
However, thanks to MallocScribble, I now also get it to crash on Snow
Leopard (which makes development much easier for me, since I have not
upgraded yet).

> Is there nothing in the console?  Failures in malloc/free often log something.

Nothing on the console.

When trying to understand the source of memory issue, I reduced the
example to a minimum, basically just a main() with a call like this:

    PreviewFilterCurvatureType *p = PreviewFilterCurvatureType::New();

An complete project is available here (just set ITK_DIR env variable to
your ITK build directory):

    http://www.invicro.com/vtk/itkcrash.tgz

If I do (see run.sh):

    qmake && make clean && make && MallocScribble=1 ./crash.app/Contents/MacOS/crash

I get this crash:

    #0  0x000000010000afb6 in itk::SmartPointer<itk::CurvatureFlowFunction<itk::Image<float, 2u> > >::Register (this=0x7fff5fbff040) at itkSmartPointer.h:142
    #1  0x000000010000b004 in itk::SmartPointer<itk::CurvatureFlowFunction<itk::Image<float, 2u> > >::operator= (this=0x7fff5fbff040, r=0x101510a80) at itkSmartPointer.h:122
    #2  0x000000010000b04b in itk::SmartPointer<itk::CurvatureFlowFunction<itk::Image<float, 2u> > >::operator= (this=0x7fff5fbff040, r=@0x7fff5fbff050) at itkSmartPointer.h:113
    #3  0x000000010002114a in itk::CurvatureFlowImageFilter<itk::Image<float, 2u>, itk::Image<float, 2u> >::CurvatureFlowImageFilter (this=0x101510540) at itkCurvatureFlowImageFilter.txx:38
    #4  0x0000000100021208 in itk::CurvatureFlowImageFilter<itk::Image<float, 2u>, itk::Image<float, 2u> >::New () at itkCurvatureFlowImageFilter.h:100 #5  0x000000010000aa20 in main (argc=1, argv=0x7fff5fbff158) at crash.cxx:15

Attached below is the output for the LightObject on which it tries to call
Register(), which seems to be uninitialized.

Interestingly, it only crashed when using qmake, not when building a
similar cmake build script. In the end I found that the problem was a

    export MACOSX_DEPLOYMENT_TARGET = 10.4

in the qmake produced makefile, and setting this to 10.5 fixed it for
the small example.
Can anybody please tell me why it crashes with the 10.4 setting? I was
not able to figure that part out. I could not figure out how to use
malloc_history(1), yet.

Unfortunately, our main application still crashes in the
PreviewFilterCurvatureType::New(), even with the 10.5 setting, and since
I believe this is related (although not exactly the same) as the minimal
example above, I wonder if anybody can give me another pointer on how to
debug this.

Sean, could you please try the minimal example and give me a hint on how
I would debug the actual cause of the problem there?

Is this a compiler issue? An ITK issue? Or what else?

Thanks,
 Christian


(gdb) p *m_Pointer
$2 = {
  <itk::FiniteDifferenceFunction<itk::Image<float, 2u> >> = {
    <itk::LightObject> = {
      _vptr$LightObject = 0x5555555555555555, 
      m_ReferenceCount = 1431655765, 
      m_ReferenceCountLock = {
        m_FastMutexLock = {
          __sig = 6148914691236517205, 
          __opaque = 'U' <repeats 56 times>
        }
      }
    }, 
    members of itk::FiniteDifferenceFunction<itk::Image<float, 2u> >: 
    m_Radius = {
      m_Size = {6148914691236517205, 6148914691236517205}
    }, 
    m_ScaleCoefficients = {1.1945305291614955e+103, 1.1945305291614955e+103}
  }, 
  members of itk::CurvatureFlowFunction<itk::Image<float, 2u> >: 
  m_TimeStep = 1.1945305291614955e+103
}


-- 
Dr. Christian Lackas, Managing Partner
inviCRO, LLC -- In Imaging Yours
P: +1 617 933 8733, F: +49 2203 9034722, E: lackas at invicro.com
http://www.invicro.com/  http://www.spect-ct.com/